Linqpad C＃表达分组子句

Question

我有

我希望使用Linqpad C＃表达式使结果看起来像

但我无法按照上表中的DayOfWeek对数据进行分组。 这是我的代码：

 from s in Shifts
  where PlacementContractID == 3
  select new
 {
    DayOfWeek = s.DayOfWeek,
    EmployeesNeeded = s.NumberOfEmployees
 }

Answer 1

您似乎正在尝试执行以下操作：

Shifts.Where(sh => sh.PlacementContractID == 3)
      .GroupBy(sh => sh.DayOfWeek)
      .Select(g => new{ 
          DayOfWeek = g.Key, 
          EmployeesNeeded = g.Sum(sh => sh.NumberOfEmployees) //maybe a cast required?
      })

从查询语法转换为流利语法的道歉。